Destroy physic helper without ref counter

Assets/IsoTools/Examples/Scenes/Scene01.unity

@@ -181,6 +181,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -367,6 +369,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -541,6 +545,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -723,6 +729,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -1087,6 +1095,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -1187,6 +1197,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -1208,7 +1220,7 @@ Prefab:
       objectReference: {fileID: 0}
     - target: {fileID: 482272, guid: c1da36e1b472b4195a4780c9d03c52de, type: 2}
       propertyPath: m_LocalPosition.z
-      value: 23
+      value: 24.5
       objectReference: {fileID: 0}
     - target: {fileID: 482272, guid: c1da36e1b472b4195a4780c9d03c52de, type: 2}
       propertyPath: m_LocalRotation.x
@@ -1287,6 +1299,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -1542,6 +1556,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -1638,6 +1654,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -1816,6 +1834,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -1837,7 +1857,7 @@ Prefab:
       objectReference: {fileID: 0}
     - target: {fileID: 436736, guid: 30a269be2fc864c9ea00c7a65636d543, type: 2}
       propertyPath: m_LocalPosition.z
-      value: 24
+      value: 23.5
       objectReference: {fileID: 0}
     - target: {fileID: 436736, guid: 30a269be2fc864c9ea00c7a65636d543, type: 2}
       propertyPath: m_LocalRotation.x
@@ -2072,6 +2092,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -2473,6 +2495,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -2494,7 +2518,7 @@ Prefab:
       objectReference: {fileID: 0}
     - target: {fileID: 436736, guid: 30a269be2fc864c9ea00c7a65636d543, type: 2}
       propertyPath: m_LocalPosition.z
-      value: 24.5
+      value: 24
       objectReference: {fileID: 0}
     - target: {fileID: 436736, guid: 30a269be2fc864c9ea00c7a65636d543, type: 2}
       propertyPath: m_LocalRotation.x
@@ -2611,7 +2635,7 @@ Prefab:
       objectReference: {fileID: 0}
     - target: {fileID: 482272, guid: c1da36e1b472b4195a4780c9d03c52de, type: 2}
       propertyPath: m_LocalPosition.z
-      value: 23.5
+      value: 23
       objectReference: {fileID: 0}
     - target: {fileID: 482272, guid: c1da36e1b472b4195a4780c9d03c52de, type: 2}
       propertyPath: m_LocalRotation.x
@@ -2690,6 +2714,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -2790,6 +2816,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -2972,6 +3000,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -3154,6 +3184,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -3488,6 +3520,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -3934,6 +3968,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -4359,6 +4395,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -4459,6 +4497,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -4622,6 +4662,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -4726,6 +4768,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -4995,6 +5039,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -5099,6 +5145,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -5199,6 +5247,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -5303,6 +5353,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -5461,6 +5513,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0
@@ -5686,6 +5740,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 4febe544112bb4678bdd59fa963c802d, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  _mass: 1
+  _drag: 0
   _useGravity: 1
   _isKinematic: 1
   _interpolation: 0

Assets/IsoTools/Scripts/Internal/IsoPhysicHelper.cs

@@ -1,21 +1,42 @@
 using UnityEngine;
+using System.Collections.Generic;
 
 namespace IsoTools.Internal {
 	[DisallowMultipleComponent]
 	[RequireComponent(typeof(IsoObject))]
 	public class IsoPhysicHelper : MonoBehaviour {
 
+		static List<IsoCollider > _tmpColliders   = new List<IsoCollider >(7);
+		static List<IsoRigidbody> _tmpRigidbodies = new List<IsoRigidbody>(7);
+
 		GameObject _isoFakeObject = null;
 		public GameObject isoFakeObject {
 			get { return _isoFakeObject; }
 		}
 
-		int _refCounter = 0;
+		public void DestroyIfUnnecessary(Component except) {
-		public void AddRefCounter() {
+			var unnecessary = true;
-			++_refCounter;
+			GetComponents<IsoCollider >(_tmpColliders);
-		}
+			GetComponents<IsoRigidbody>(_tmpRigidbodies);
-		public void DropRefCounter() {
+			if ( unnecessary ) {
-			if ( --_refCounter <= 0 ) {
+				for ( int i = 0, e = _tmpColliders.Count; i < e; ++i ) {
+					if ( _tmpColliders[i] != except ) {
+						unnecessary = false;
+						break;
+					}
+				}
+			}
+			if ( unnecessary ) {
+				for ( int i = 0, e = _tmpRigidbodies.Count; i < e; ++i ) {
+					if ( _tmpRigidbodies[i] != except ) {
+						unnecessary = false;
+						break;
+					}
+				}
+			}
+			_tmpColliders.Clear();
+			_tmpRigidbodies.Clear();
+			if ( unnecessary ) {
 				Destroy(this);
 			}
 		}

Assets/IsoTools/Scripts/IsoCollider.cs

@@ -97,7 +97,6 @@ namespace IsoTools {
 			_realCollider           = CreateRealCollider(fake_collider_go);
 			_realCollider.material  = material;
 			_realCollider.isTrigger = isTrigger;
-			physicHelper.AddRefCounter();
 		}
 
 		void OnEnable() {
@@ -117,7 +116,7 @@ namespace IsoTools {
 				Destroy(_realCollider.gameObject);
 				_realCollider = null;
 			}
-			physicHelper.DropRefCounter();
+			physicHelper.DestroyIfUnnecessary(this);
 		}
 
 	#if UNITY_EDITOR

Assets/IsoTools/Scripts/IsoRigidbody.cs

@@ -327,7 +327,6 @@ namespace IsoTools {
 			_realRigidbody.isKinematic            = isKinematic;
 			_realRigidbody.interpolation          = interpolation;
 			_realRigidbody.collisionDetectionMode = collisionDetectionMode;
-			physicHelper.AddRefCounter();
 		}
 
 		void OnEnable() {
@@ -348,7 +347,7 @@ namespace IsoTools {
 				Destroy(_realRigidbody);
 				_realRigidbody = null;
 			}
-			physicHelper.DropRefCounter();
+			physicHelper.DestroyIfUnnecessary(this);
 		}
 
 	#if UNITY_EDITOR